3 sourced reports, with what to check before you buy. Each one links to the page it was reported on.
Worth checking
Charging board (Ladeplatine) replacement needed for slow/unreliable charging
Repair-record source confirming the charging port is a known replaceable failure point on SM-X210.
What to check. The USB charging port is a documented weak point — slow charging, intermittent connection, and a loose cable point to the charging board. It is replaceable but the repair is not trivial (needs heat, new adhesive).
Display started freezing within 18 months of purchase
Single owner report; Samsung's response routed to service center.
What to check. One owner reports the display freezing within 18 months despite light use. This is a single report, so treat it as a risk to verify rather than a widespread fault.
Two-finger touch stops registering during gaming (multi-touch failure)
A second UK review on the same product line also noted touch sensing problems holding a finger on screen blocks other touches.
What to check. If you game or use two-finger gestures, the touchscreen drops touches when a second finger is held down — Samsung's own support verified it. Not a fixable software toggle per the reviewer.
These reports come from the pages linked under each item: owner forums, repair guides and workshops. They are not a diagnosis of any one unit, and a careful check of the one you are buying still applies.
Text from the Kriko Tablets catalog, version 0.1.1, under the CC-BY-SA-4.0 license.